HM3134 [HMSEMI]
DC-DC CONVERTER CONTROL CIRCUITS;
| 型号： | HM3134 |
| 厂家： | 
H&M Semiconductor |
| 描述： | DC-DC CONVERTER CONTROL CIRCUITS DC-DC转换器 |
| 文件： | 总13页 (文件大小：1093K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HM3134
Data Sheet
DC-DC CONVERTER CONTROL CIRCUITS
DC-DC CONVERTER CONTROL CIRCUITS
■
■
■
OUTPUT SWITCH FIXED VOLTAGE 15V
2% REFERENCE ACCURACY
LOW QUIESCENTCURRENT: 15UA (TYP.)
OPERATINGFROM 20V TO 200V
FREQUENCY OPERATION TO 80KHz
ACTIVE CURRENT LIMITING
■
■
■
DIP-8
DESCRIPTION
Product Summary
The HM3134 series is a monolithic control
circuit delivering the main functions for DC-DC
voltage converting.
V
20~ 200V
IN
The device contains an internal temperature
compensated reference, comparator, duty cycle
controlled oscillator with an active current limit
circuit, driver and high current output switch.
Output voltage is fixed 15V ,integrated two external
resistors with a 2% reference accuracy.
I
300mA
O
V
15V
OUT
SO-8
°C
-40 ~150
Work Tem
Employing a minimum number of external
components the HM3134 devices series is
designed for
Step-Down
applications.
APPLICATIONS
l
l
Electric-Vehicle, Electric-Bicycle Apliance
Industry Controls
TYPICAL Application CIRCUIT
HM3134
TYPICAL OUPUT CURRENT TABLE(1)
Part Number
HM3134S
DCM (2)
260mA
300mA
CCM (3)
300mA
HM3134P
400mA
1
HM3134
Data Sheet
DC-DC CONVERTER CONTROL CIRCUITS
Pin Configuration
VIN
VIN
VC
VC
HM3134P
HM3134S
CS
CS
Block Diagram
CS
VC
Pin Description
Description
I/O
I
Pin Name
Pin Number
The VCC power supply for the HM3134 Family and the feedback
for the circuit. For the normal operation, a capacitor with 1uF is
recommended connected to this pin.
1
VIN
5/6
7/8
Drain
GND
I
The Power MOSFET Drain.
4
CS
VC
The ground reference for the IC.
2
I/O
Ordering Information
Part Number
Description
SOP-8, Halogen free in T&R, 2500Pcs/Reel
DIP-7, Halogen free, 50Pcs/Tube
HM3134S
HM3134P
2
HM3134
Data Sheet
DC-DC CONVERTER CONTROL CIRCUITS
ABSOLUTE MAXIMUM RATINGS
Symbol
Vdd
Parameter
Value
26
Unit
V
Power Supply Voltage
Vir
Comparator Input Voltage Range
Switch Drain Voltage
-0.3 to 20
200
V
Vdra
Vsor
Vds
V
Switch Source Voltage
Switch Drain to source Voltage
Driver Drain Voltage
200
V
200
V
Vdg
200
V
Driver Drain Current
300
mA
A
Ids
ISW
Switch Current
0.5
o
DIP Package
Ptot
Power Dissipation at Tamb = 25 C (for
)
1.25
W
(for SOIC Package)
0.625
Top
Operating Ambient Temperature Range (for AC SERIES)
(for AB SERIES)
- 40 to 1 4 5
- 40 to 150
oC
oC
Tstg
Storage Temperature Range
Absolute Maximum Rating are those values beyond which damage to the device may occur.
Functional operation under these condition is not implied.
Recommended Operation Conditions (Note 2)
Parameter
Value
Unit
Supply Voltage, DRAIN
20 to 200
-40 to 150
V
oC
Operating Junction Temperature
3
Data Sheet
DC-DC CONVERTER CONTROL CIRCUITS
ELECTRICAL CHARACTERISTICS
(Refer to the test circuits, Vcc = 60V, T = TLOW to THIGH, unless
otherwise specified, see note 2)
Control Function Section
Current Sense Leading
Edge Blanking Time
TLEB
Ton_min
Ton_max
Tss
(Note 2)
(Note 2)
200
300
12
ns
ns
Minimum On Time
Maximum On Time
10
14
us
Internal Soft Start Time
(Note 2)
5
ms
mA
mA
mA
mA
kHz
kHz
V
380
530
420
600
650
800
61
460
650
HM3134S
Ilimit
Normal Peak Current Limit
HM3134P
HM3134S
(Note 2)
Over Current Protection
Threshold
IOC_th
(Note 2)
HM3134P
Fclk
Internal Frequency Clock
56
66
Peak to Peak Frequency
Jitter
ΔFclk
BVDSS
4
MOSFET
Voltage
Break
Down
260
120
5 0
MOhm
MOhm
HM3134S
HM3134P
Steady State Conduction
Resistance
Rds_on
Over Temperature
TSD
TRC
Thermal Shut Down
Thermal Recovery
(Note 2)
(Note 2)
140
130
oC
oC
Note1. Stresses listed as the above "Maximum Ratings" may cause permanent damage to the device. These are for
stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to maximum rating conditions for extended periods may
remain possibility to affect device reliability.
Note2. It’s guaranteed by design and functionally tested during production manufacture.
4
HM3134
Data Sheet
DC-DC CONVERTER CONTROL CIRCUITS
TYPICAL APPLICATION CIRCUIT
HM3134
Printed Demoboard
Symbol
Vout
GND
GND
Vin
Pin
1
2
3
4
Test Condition (VOUT = 15V)
Test
Line Regulation
Load Regulation
Output Ripple
Efficency
Conditions
I
O = 260 mA
Value (Typ.)
Unit
mV
mV
mV
%
= 30 to 120V,
VIN
100
30
V
V
V
V
IN = 60V, IO = 75 to 260 mA
IN = 60V, IO = 260 mA
IN = 60V, IO = 260 mA
IN = 60V, IO = 260 mA
50
85
Out Voltage
15
V
5
HM3134
DC-DC CONVERTER CONTROL CIRCUITS
Step-Down Converter
Printed Demoboard
Symbol
Vout
GND
GND
Vin
Pin
1
2
3
4
Test Condition (VOUT = 15V)
Test
Line Regulation
Load Regulation
Output Ripple
Efficency
Conditions
Value (Typ.)
Unit
mV
mV
mV
%
= 300 mA
IN = 40 to 150, IO
40
50
V
V
V
V
V
IN = 60V, IO = 30 to 400 mA
IN = 60V, IO = 240 mA
IN = 60V, IO = 240 mA
IN = 60V, RLOAD = 100Ω
100
80
Out Voltage
15
V
6
HM3134
Data Sheet
DC-DC CONVERTER CONTROL CIRCUITS
Step-Down Converter
HM3134
Printed Demoboard
Symbol
Vout
GND
GND
Vin
Pin
1
2
3
4
Test Condition (VOUT = 15V)
Test
Line Regulation
Load Regulation
Output Ripple
Efficency
Conditions
Value (Typ.)
Unit
mV
mV
mV
%
= 400 mA
IN = 40 to 100, IO
15
30
V
V
V
V
V
IN = 60V, IO = 40 to 400 mA
IN = 60V, IO = 400 mA
IN = 60V, IO = 400 mA
IN = 60V, RLOAD = 100Ω
100
85
Out Voltage
15
V
7
HM3134
DC-DC CONVERTER CONTROL CIRCUITS
Step-Down Converter
HM3134
Printed Demoboard
Symbol
Vout
GND
GND
Vin
Pin
1
2
3
4
Test Condition (VOUT = 15V)
Test
Line Regulation
Load Regulation
Output Ripple
Efficency
Conditions
Value (Typ.)
Unit
mV
mV
mV
%
= 20 to 50V,
I
O = 200 mA
VIN
15
20
50
85
15
VIN = 35V,
VIN = 35V,
I
O = 20 to 200 mA
O = 200 mA
I
= 35V,
= 35V,
I
O = 200 mA
VIN
VIN
R
Out Voltage
lLOAD = 100Ω
V
8
HM3134
Data Sheet
DC-DC CONVERTER CONTROL CIRCUITS
COMPONENTS SELECTION
PERATION DESCRIPTION
l
Start-Up Resistor (RST) and Hold-up
Capacitor (CVIN)
Over Temperature Protection
l
o
To keep proper start-up operation and meet the
start-up time requirement, the value of the VIN
capacitor CVIN and start-up resistor RST need well
designed.
When the IC temperature is over 140 C, the IC
shuts down. Only when the IC temperature drops to
80 oC, the IC restarts to work.
l
Light Load Mode Operation
Firstly make sure the current flowing through the
RST is larger than the IC start-up current I_VIN_ST
(3uA typically) and lower than the IC operation
current I_VIN_op (800uA typically).
To save more power loss in no load condition,
4 family adopts a light load mode operation.
HM313
When the switching period is longer than 300us,
the peak current limit will be decreased to 100mA.
With this feature, ultra no load power loss
consumed by the pre-load can be <5mW.
V
V
in_min
in_max
<RST <
I_VIN_op
I_VIN_ST
put Stage
The Selection of the DC Out
l
Where:
The output power rage determines the selection of
the CS and LX design. For Pout<4W, it’s
recommended to use paraeter rectification; for
HM3134
paraeter
Pout>4W, it’s recommended to use dip8
rectification.
HV IN
C1
R1
RS
LX
C2.C3
C4
OUT
工 作
温度
D1.D2
10U/63V
10U/63V
20~50V
20~50V
0R5
1R0
0R5
1R5
2R0
100U
8*10
220U
6*8
104.4.7U
SS110.M7
1000U 15V300MA -40~1
150K
150K
50 °
C
470U
15V150MA
44~100V 10U100V 150K
30~120V 10U150V 150K
680H
8*10
331UH
6*8
1000U 15V450MA
470U
470U
15V260MA
15V200MA
>100V
10U200V 330K
1MH
6*8
9
HM3134
DC-DC CONVERTER CONTROL CIRCUITS
Vin_min: The minimum peak value of DC input
such as 1N400X series. To minimize the output
voltage error, the forward voltage of D1 and DF
should match. At the same time, the power supply
of the IC will be taken place by the output voltage
through DF after the soft-start.
voltage.
Vin_max: The maximum peak value of DC input
voltage. For universal input, Vin_max is 180V.
Secondly the VIN capacitor is recommended to be
selected by the following equation:
l
Inductor (L)
For Buck converter, the selection of L can be
calculated by the following equation:
V
(
in_min -I_VIN_ST )×TST
RST
CVIN
<
2×(Vin max - VDS - Vo )×Vo ×Io
V
L =
L =
for CCM
for DCM
IN_ON
h ×[Il2imit - (2×Io - Ilimit )2 ]×(Vin _ min - VDS )×fsw
2×(Vin max - VDS - Vo )×Vo ×Io
h ×Il2imit ×(Vin _ min - VDS )×fsw
For better line and load regulation, the value of CVIN
is recommended to be as small as possible.
Typically 1uF is recommended. If the VIN
capacitance is not big enough to cause the start-up
failed; increase the value of CVIN and decrease the
RST, re-do the calculation of above equation until
ideal start-up performance is got.
For Buck/Boost converter, the selection of L can be
calculated by the following equation:
P
o
L = 2×
for CCM
for DCM
h ×[Il2imit - (2×Io - Ilimit )2 ]×fsw
P
o
For better noise immunity, it’s recommended that
the VIN capacitor be placed as close as possible to
the VIN Pin.
L = 2×
h ×Il2imit ×fsw
Where:
l
Freewheeling Diode (D1)
When Io>Ilimit/2, it’s working in CCM operation mode;
when Io<Ilimit/2, it’s working in DCM operation mode.
Diode D1 should be an ultra-fast type. Slow diode
is not acceptable, because the inductor is always
working in continuous conduction mode during
start-up period. Slow diode will cause high current
spike which will falsely make the Power MOESFET
turned off and prevent the output voltage reach
regulation. Slow diode will also cause extra power
loss and make the efficiency lower down. A
100V/1A diode with recovery time <50ns is
recommended for Buck converter and 200V/A
diode with recovery time <50ns is recommended for
Buck/Boost converter, such as ES1D and ES2D.
Vin_min: The minimum DC input voltage after the
rectified diode bridge. It’s recommended to keep
Vin_min higher than 70V always.
η : The overall estimated efficiency, the typical
value of 0.8 is recommended for DCM and 0.7 for
CCM.
Vo: The averaged output voltage.
Io: The averaged output current.
l
Feedback Diode (DF)
VF: The forward conduction voltage of the
freewheeling diode D1.
The information of the output voltage is sent the IC
through the diode DF which can be a slow diode,
10
HM3134
Data Sheet
DC-DC CONVERTER CONTROL CIRCUITS
VDS: The MOSFET conduction voltage during it’s
Table 1
turned on. The typical value of 5V is recommended
Start-up Time
Output Ripple
No Load
RST↑
CVIN
L↑
COUT
↑
↑
↓
↑
→
↑
↑
↓
↓
↓
↑
→
Fsw: The switching frequency and 56 kHz is
recommended.
↑
Ilimit: The minimum peak inductor current limit. For
↑
HM3134S, it’s 380mA; for
it’s 560mA.
HM3134P
Any standard off-the-shelf inductor that meets the
design requirement can be selected. The value of
the inductor L determines the averaged switching
frequency according to the rule of power balance.
Typically
a
0.68mH-2.2mH
inductor
is
recommended to be used with Isat>0.6A for
n
Sa
HM3134
d Isat>0.8A for HM3134P.
l
Output Capacitor (COUT)
The selection of output capacitor is determined by
the requirement of the output voltage ripple. To
make the output ripple small enough, a large value
of COUT is needed. But large value of COUT will
increase the cost and need longer time for soft-start.
Typically
a
capacitor with 100uF/35V is
recommended.
l
Pre-Load Resistor (RL)
At no load condition, the switching frequency is
determined by the value of CVIN and the operation
current of the IC not by the output voltage
information. Combined with the value of the
selection of inductor L1, there’s a minimum input
power for this circuit. To keep the regulation of the
output voltage at no load condition, a minimum load
current is needed. For 15V application, a resistor
with value around of 30k ohm is recommended.
Table 1 shows the relationship between these
circuit parameters and the key operation
performance.
11
HM3134
DC-DC CONVERTER CONTROL CIRCUITS
Package Dimension
SOP8
D
C
θ
e
b
Dimensions In Millimeters
Dimensions In Inches
Min
Symbol
Min
1.350
Max
1.750
A
A1
A2
b
A
A1
A2
b
1.350
0.100
1.350
0.100
0.250
1.350
1.550
0.330
0.510
0.330
c
0.170
0.250
c
0.170
D
e
E1
E
4.700
1.270（BSC）
5.800
5.100
0.050（BSC）
6.200
D
e
E1
4.700
1.270（BSC）
5.800
3.800
4.000
L
0.400
1.270
L
0.400
θ
0º
8º
θ
0º
12
Data Sheet
DC-DC CONVERTER CONTROL CIRCUITS
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
Min
Max
A
A1
A2
B
3.710
0.510
3.200
0.380
4.310
0.035
0.020
0.126
0.015
0.047
3.600
0.570
0.142
0.022
B1
C
D
E
E1
e
1.524(BSC)
2.540(BSC)
0.060(BSC)
0.100(BSC)
0.204
9.000
6.200
7.320
0.360
9.400
6.600
7.920
0.008
0.354
0.244
0.288
0.014
0.370
0.260
0.312
L
E2
3.000
8.400
3.600
9.000
0.118
0.331
0.142
0.354
13
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